This potent face serum is formulated to visibly refresh and rejuvenate the look and feel of your skin in just four weeks. The key ingredient is something called PDRN, a DNA polymer (derived here from salmon and included at a 1 percent concentration). The skin-reviving ingredient helps lift, firm, and smooth skin. The formula also includes a skin-supporting blend of peptides, vegan epidermal growth factor, amino acids, panthenol, ectoin, ceramide NP, and glutathione. Use one vial a week, morning and night, for more radiant, healthy-looking skin. 4 x 5ml